<?php
/**
 * Created by PhpStorm.
 * User: changyifan
 * Date: 2018/4/24
 * Time: 下午12:28
 */

namespace Home\Model;
use Think\Model\BaseModel;

class DifficultyModel extends BaseModel{


    public function getDiffInfo(){
        $info = $this->select();
        return $info ? $info : array();
    }


}